申请人:Bobsein Barrett Richard
公开号:US20100076145A1
公开(公告)日:2010-03-25
A polymer composition with blocks of hydrophobes attached to or within the backbone of an associative thickener. The blocks are composed of two or more units of the same or different hydrophobes whereby the hydrophobe is reversibly switched between being hydrophilic and hydrophobic in nature. When the hydrophobe is rendered hydrophilic, the aqueous thickener is pourable and readily incorporated into aqueous polymer compositions. When this hydrophobe is rendered hydrophobic, the thickener performs its thickening function efficiently, especially in tinted systems. Switching is readily accomplished by adjusting the pH of the associative thickener composition and the aqueous polymer composition being thickened.
一种聚合物组合物,其包括连接到或嵌入到关联增稠剂骨架上的疏水块。这些块由相同或不同的两个或多个疏水单元组成,其中疏水性可逆地在亲水性和疏水性之间切换。当疏水变为亲水时,水性增稠剂可倾倒且容易混合到水性聚合物组合物中。当疏水变为疏水时,增稠剂可以有效地发挥其增稠功能,特别是在有色系统中。通过调整关联增稠剂组合物和被增稠的水性聚合物组合物的pH值,可轻松实现切换。